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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Source: University of Leicester. Source: University of Leicester. Cooper, from the Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, chairs the TOAR Steering Committee and has been working to develop the assessment since 2014. Click to enlarge. Click to enlarge. Owen Cooper.

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PNNL-led international study finds ultrafine aerosols have outsize impact on storm clouds, precipitation

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vehicles) and industrial air pollution—fuel powerful storms and influence weather much more than has been appreciated, according to a study published in the journal Science. Through detailed computer simulations, the scientists showed how the smaller particles have a powerful impact on storm clouds. —Jiwen Fan.

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Study finds increased air pollution can worsen both drought and flooding

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Zhanqing Li (lead author), Feng Niu and Yanni Ding of the University of Maryland; Jiwen Fan of Pacific Northwest National Laboratory; Yangang Liu of Brookhaven National Laboratory; and Prof. Daniel Rosenfeld of The Hebrew University of Jerusalem. Aerosols alter cloud density and the radiative balance of the atmosphere.

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